https://play.google.com/store/apps/details?id=de.feo_elektronik.trumaapp&hl=en_GB
Truma have a handy app available as a free download to assist in levelling your motorhome (or caravan)
a collection of top tips, tricks and ideas, DIY improvements and motorhome modifications that can also be made to caravans, campervans and RVs. Many of these modifications I have made and used on our own motorhome but I have also listed other tips, advice and product reviews that I have found on the Internet including ideas for day trips and visits.
Motorhome Mods UK 